Man who lived in Quincy, Monroe City gets 20-year prison sentence for distributing methamphetamine

SPRINGFIELD, Ill. – Phillip C. Mayfield, 35, who lived in both Quincy and Monroe City, Mo., was sentenced on Thursday to 20 years in federal prison for distributing methamphetamine, to be followed by five years of supervised release.

Mayfield was indicted in June 2023 and convicted after a jury trial in June 2024. During three days of trial testimony, the government presented evidence to establish that Mayfield sold more than 50 grams of methamphetamine to another person in a grocery store parking lot in Quincy in February 2023. He then made a second sale of more than 50 grams of methamphetamine in an apartment parking lot in Quincy in March 2023.

At the sentencing hearing before U.S. District Judge Colleen R. Lawless, the government established that Mayfield was on bond in five separate state felony cases at the time he made the drug sales. During the hearing, Lawless noted Mayfield had a significant criminal history which included two prior drug trafficking convictions. Lawless also commented that Mayfield was motivated to commit his crimes because he liked the lifestyle of being a drug dealer and the financial means it provided him.

Mayfield remains in the custody of the United States Marshal Service, where he has been since his arrest on June 20, 2023. The statutory penalties for the distribution of methamphetamine are not less than 10 years and up to a life term of imprisonment; at least five years and up to a life term of supervised release; and up to a $10,000,000 fine.

The Illinois State Police West Central Illinois Task Force investigated the case, along with the Drug Enforcement Administration and the Springfield Resident Office. Assistant U.S. Attorneys Sarah E. Seberger and Matthew Z. Weir represented the government in the prosecution.

The case against Mayfield is part of Project Safe Neighborhoods, a program bringing together all levels of law enforcement and the communities they serve to reduce violent crime and gun violence, and to make our neighborhoods safer for everyone.